Incubator.



B. A. ENGELMANN.

INUUBATOR. APPLICATION FILED JAR. 15, 1909. 989,228. Patented Jan. 3, I911.

J V j 6' wue-Moz inafter more fully UNI "ED STATES Pi-ijlizlli T @h hli ia.

BERTRALI ADOLPH ENGELMANN, OIE BAKER, KANSAS.

INCUBATOR.

Specification of Letters Patent.

Application filed January 15, 1909.

support for the chicks when hatched. said floor at the same time permitting minute 5 quantities or air to percolate therethrough and into the interior of the incubator without danger of chilling the contents thereof. .Yith these and other objects in \'l'W the inx'ention consists of certain novel details of construction and combinations of parts heredescribed and pointed out in the claim.

In the accompanying drawing. which is a vertical. longitudinzl section through the incubator the preferred form of the invention has been shown.

Referring to the drawing by characters of reference C designates the casing constituting the body oftiie incubator, said casing sing snppsiarted in a suitable manner. and

the walls thereof being each preferably formed of t o thicknesses of wood or other suitable. material s ch as indicated at 1. said thicknesses eing spaced apart and having a packing of niincrai wool or other insulating material 2 interposed between them. The top of the casing may be formed either partly or entirely of outer and inner frames 3 and 4 Z'QSPQCiiYQlf', each of which contains a light of glass. whereby the contents of the casing can viewed at all times. The two frames 3 and 4 are spaced apart and an air space 5 is formed between them.

A door 6 is hingedly connected to one of the walls of the casing, preferably the front wall. the length and height of the door heing slightly greater than the corresponding dimensions of a tray 7, which is slidably mounted upon guide and supporting cleats 8 secured within the casing C. Itwill be apparenttherefore that when the door 6 is opened the tray 7 can be'i'eadily slid out of the casing. This tray constitutes means for Patented Jan. 3, 1911. Serial No. 472,519.

holding the eggs to be hatched, and can be of the usual or any preferred construction.

A series of supporting strips 9 extend across the bottom portion of the casing C, and these strips constitute supports for a tray 10, the frame 11 of which is provided with a coarse fabric bottom portion, as indieated at 12, a quantity of light comminuted material. such for exzunple as wheat chafl', is contained within the tray 10 and supported by the coarse fabric 'l2.this material being indicated at 13, and constituting not; only a soft floor for the compartmentwithin the casing C, butalso serving to permit minute quantities of fresh air to percolate through the tray and into the com 'iartinciu.

Supported in any suitable manner within the upper portion of the compartment within casing C are one. or more heating pipes 1-} and 15 cornice-ted to a suitable heater not. shown. Plates of copper or other good heat-conducting material are secured within thccorners of the compartments within casing C and are designed to conduct the heat into said corners and thus prevent the eggs contained within the corner portions of the casiu; from becoming chilled. Obviously any desired number of these plates may be utilized and they may be located wherever deemed necessary.

In using the device herein described the tray T is filled with eggs, and, after the door 6 has been opened, said tray is inserted through the door opening and on to the porting cleats S. The door then closed and the contents of the incubator can be 5 viewed atall times through the glass doors or closures 3 and st mounted within the top of the casing C. The incubator is then heated by directing a suitable heating medium into the pipes ll and 15. Fresh air is, of course, constantly supplied in minute quantities through the comininutcd material constituting the floor.

What is claimed is An incubator including a casing, aseries of parallel supporting strips extending across the open bottom of the casing, a frame removably mounted within the casin a cloth secured at its edges to the frame and resting loosely on the strips, said cloth constiluting the bottom of-ihe i'ncnlmtor and he cloth and frame coiiperatlng to form 'a trav. and a layer of light. closelv lvin ('0111- 4 a & Z

minnted material resting on the cloth and 5 conwlvtely covering it, said material and cloth coxtstitnting means for retarding the passage of air into the casing.

. mv own, I have herc'ta afiixed my signature I In testimony that I claim the foregoing as 

